DE2216347A1 - Piston engine with at least one compressor cylinder and one working cylinder - Google Patents

Description

Patent Attorneys -

0ΙΛ.-ΙΝΟ. F. ROSENWI OtLAHO. HH WIlHElM Stuttgart, April 4, 1972

7000 Stuttgart-! - There / where

Oymnafiunutr 311. ■ ■

fet 071V291113

-jetr .: Psverrsrsieldung P 4223 / 2a

Gilbert van Avermaete
20, rue de! 'Europe

A r lon / BELGIUM

Piston engine with at least one compressor cylinder and a working cylinder

wet = s: string «ans': s

The invention relates to a piston engine with at least one ZxmpressorzyiincUr uad a working cylinder, between which one Combustion chamber with constant pressure is arranged in-which a The medium tensioned in the compressor cylinder increases the pressure learns and from which this is transferred to the working cylinder, in which the pressure medium relaxes, the working cylinder with an inlet valve and an * outlet valve ^ rather ..- is. . · .'.- * · '"

D .-? R i.rfindur. £ - is based on the task of making a pressure equalization ^. 'J3te: z superfluous that is provided' to. the drive device of the inlet valve of the working cylinder zu.helfen, in .- ■, icliem the relaxation-takes place in this "engine type, since in the

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^209843/0741

opening the valve of this compensation system has the disadvantage that the inertia of the valve is increased and that a source of additional heat is created. -.

For this purpose it is provided according to the invention that the Linlaliventil opens to the outside with respect to the working cylinder ur_d a direct drive device without the interposition of a compensation system for the prevailing in your working cylinder Has pressures while the drive system of the exhaust valve of the Working cylinder is controlled such that it is in its closed position is before the piston of the working cylinder. ^ its upper Dead center; reached, so that in the cylinder .remberende-and the medium compressed by the rubbing in the top dead center acting on the face of the valve, from that of the combustion chamber compensates for the pressure caused by the coming pressure medium.

The invention also relates to a cooling device for an inlet valve a cylinder of a piston engine of the aforementioned type, in which the pressure medium expands, this Cooling device a supply line for pressure medium with lower Temperature than that coming from the combustion chamber, which ignites in the vicinity of the valve disc.

The aim of the cooling device according to the invention is to make the cooling of the valve effective, in particular by a complete Flushing is ensured by the cooling medium of the parts of the valve that are arranged in the area of the engine, the high Exposed to temperatures.

According to the invention, the feed line opens into one at this corner fixed Hing, which is arranged in the supply channel of the pressure medium koramenden from the combustion chamber with high temperature and the Ves- tilstangs surrounds it, with the band of the ring up close of the valve plate is extended; to this at least one To surround part of the height of its outer surface.

209843/0741 _BAD original

For example, in one embodiment of the invention, the inlet valve disk is hollowed out on its surface facing the inside of the ring, so that a large annular chamber is created in the valve, which with the ring; communicating, "supplied with the 7 \ _{ihlciruckmedium;}

3ei an advantageous embodiment of the invention; the V / and of the ring is inclined in the area of its edge to form a conical surface with the tip lying outside the ring on the valve stem, while the valve disk has a ring seal in its area within the Hing3s, which becomes the V ^.: c.nd extends around. so "to limit the passage of cooling medium between the valve plate and the channel with * hot Kediura to a minimum when the valve is closed, v / whether the valve is so open-C-CvU ^- C _3". "'- -

the ring seal differs from the Kenyan surface in such a way removτ that the passage between them grows rapidly and there; -, flushing of the valve disc with cooling medium then allowed, v.'onp the medium at high temperature is fed to the working cylinder

In a particularly advantageous embodiment of the invention a branch is provided in the supply line of the cooling medium in front of your ring, which opens into a circumferential recess, the is attached to the valve seat around below the ring and which in its entire circumference with the channel of the medium with high Temperature in the area of the valve disk that is not surrounded by the ring, so that the cooling medium this Area cools.

I'ie Zrf ir-major ^: has. also an intake valve drive device .jun aim to realize a very weak supply-allowed, ν, -cboi the advantage of constant feed and constant Maintain pressure w ± a. . . ■ ■

209843 / 07A Γ

For this purpose, the drive of the inlet valve is made of one Systems of rotating cams and a compensating lever which is known as the Caprotti system.

V. 'Further details and special features of the invention emerge from the description of the accompanying drawings which, as a non-limiting example, show a particular embodiment of the subject matter represent the invention.

Fig. 1 is a schematic, partially broken away view of an external combustion engine, the working cylinder, ■ in which the medium relaxes, with an inlet valve according to the invention is provided.

Fig. 2 is an enlarged sectional view taken along the line

II-II the Pig. 1 that the inlet valve is open ■ position as well as its drive mechanism shows.

3 is an enlarged view taken along line III-III of FIG ? ig. 1 sectional view showing the outlet valve of the working cylinder in which the medium is located relaxed, as well as its drive device, this valve being shown in its closed position.

The same reference numerals are used in the various figures identical components.

The T £ ii.la £ - according to the invention and shown in the drawings ver. ~ il 1 ict intended to be the cylinder 3 of one in Pig. 1 shown Equip piston engine with at least two cylinders ur.d 3, between which a combustion chamber + is arranged, in which there is a constant pressure and in which that in that iCompresscraylinder 2 compressed indium experiences a pressure increase - what is relaxed in the working cylinder 3. The yen—

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The seat 5 of the valve is arranged in such a way that the valve opens outwards with respect to the working cylinder 3. The drive device of the inlet valve 1 is direlct and is. Von a Sys who, 6 formed from rotating cams 7 and '8 and a compensating lever 0; which is known under the name System Caprotti', where a spring 10 is provided, around the Valve attributed to its seat. This type of opening of the valve allows the compensating system to make the pressures in the working cylinder 3 and the chamber 4 superfluous, which is necessary in the case of the cores of this type in order to close, des To enable the inlet valve of the working cylinder 3, which is to umern. of the cylinder opens, this valve tending to remain open under the pressure prevailing in the -hammer 4-. With the valve according to the invention, the pressure prevailing in the chamber 4 can be overcome when the valve is opened. In order to do this without a compensation system, the drive system 11 of the outlet valve 12 of the working cylinder is controlled in such a way that it is in the closed position before the piston 13 reaches its top dead center, the one remaining in the working cylinder 5 and the one reaching its top dead center piston "usanmengedrückte medium acting on the valve Pläche • jsd of the print medium from the chamber 4 and balances pressure caused as the system 6 allows, without effort, the valve Λ. in the open position" to transfer. ■ '.

The cooling device of the inlet valve 1 of the working cylinder 3 according to the invention contains a supply line 14 for pressure medium with a lower temperature. than the one coming from the combustion chamber: sr 4- and opens on the one hand between the compression chamber 2 and the combustion chamber 4 into the line 14 ^|; , d I ₅ B ^ d ie se ■. ' nitciaandtir vcroindet, and. on the other hand in the vicinity of the valve disk 15 of the valve 1. The supply line. 14 opens into a wet Hing 16, which is arranged in the "supply channel 17 of the pressure medium at high temperature, which connects the chamber 4- with the ar-

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connecting cylinder 3, the sing surrounding the rod 18 of the valve 1 and its sand 19 extending up to the vicinity of the valve disk 15 to surround the latter over part of the height of its outer surface.

How in? Ig. 2, the valve head 15 of the valve 1 is advantageously hollowed out from its surface 20 so that an annular chamber 21 of larger dimensions is formed in the valve, which is connected to the interior dos Risgs 16, which is supplied by the Druckkühlaediun. The wall of the hanging is inclined near its edge 19; around a conical surface ■

22, the point of which is outside the hanging on the pole of the Vent i Io 1 is, where the valve valve 1> in π ei η er :, within of the hanging area a circumferential seal.:;

23 which extends to the inclined wall 22 of the ring :: 16, to allow the passage of cooling medium between thorn Ver ^ tiliollor and the ring to the channel 17 of the high temperature medium to a minimum 'when the valve is closed, which is in the V.'eise is designed that when it opens the sealing ring 23 removed from the conical surface 22 such that

the passage between them grows very quickly and allows flushing of the outer surface of the valve disk with cooling medium when the medium at high temperature is added to the working cylinder.

leads is

According to the invention, a branch 24 is in the supply line of the cooling medium provided in front of the ring 16, which circulate in a the recess 25 opens around the seat 5 of the valve 1 around is arranged below the ring. This recess 25 is on its entire circumference nit the channel 17 of the medium with high Temperature in the area of the valve disc in connection that is not by de ^: ring is surrounded so that the cooling medium this latter Area cools.

209843/0741

BATH ORIGINAL

jLz is ν; oiil to be understood - "that the present invention is not limited in any way to the embodiment described above" 5.3t - and that changes can be made without the ~ \ L ': jz. ^: i will leave the 'present invention.

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Claims (1)

Claims Piston engine sit at least one Koiapresacr ^ ylinaer and a working cylinder ^ between which a combustion chamber with constant pressure is arranged: "in which a Kediusi clamped in the compressor cylinder experiences a pressure increase and from which this is transferred into the working cylinder, in which sicn the pressure medium discharged, with "the working cylinder nit an inlet wc; _] w, L j- * a *: u c-.iiJü * r * ^ oJ.di3V ti Z * - ^ -vo. '. - -> e * .- Ji-. -L ο u ^ U. vAVa. <.a_ Ox * Cj * ~ the. Γ-vj. '. Ü ocoit ^ i ;, select "end d ;;»> - ^; -n ~ rubbed £ systeE (' ΊΊ) doo .iUGli .'- ventiis (12) of the worker in such a way; is controlled :, that it is in its closed position before the piston (13) "^ QS of the working cylinder reaches its top dead center, so that what remains in the Ai be it -c .r / lind it and from the pistons iia upper T'touru · ;! zuaaruEeiigedrück, te Κν.αί'ΐιτ: those on the surface den Vc ^j nri] sv;:. rk end en, from those of delärennlcaisnor (4) corking. Dz ^v u <: /. Aediura evoked iJrücl: compensates. Piston jictor according to claim 1, since or er: i; ck &:; r.:u. - ^ n.net, ': ai r jenper & tur as dac of 5er Ζπ};.;: ^. · *:;.: .. r (- + "> -! s I-ledium becitsr and the in>~; / - cn fc ^ v ^ n \ <L ^ y ('.C ^ Gr in des, Zuführa:; al; i7] ,, - s vcn ^ x- ^ rei ^^ r .-: .. BAD ORIQJNAL coming en pressure medium with high temperature is arranged • and the valve tang © (13) surrounds, v / obei the hand (19) of the I? ir.ge3 "is extended to the vicinity of the valve disk (15); - ^ a di _t ; r; ön to at least part of the height of his ...! ^ prii'cho wU not given. "- - - ■ 3 »MolOcnsotor according to claim 2 ,. characterized in that: the inlet valve plate (1-5) is hollowed out on its plane facing the inner part of the ring (16) so that a r: roZri.anL <; r <i iüngkanuaer (21) - arises in the valve, die ::: l ;; u « ^r _i Hir; - in Veroinduus ct.eht, the one with cooling pressure medium Ilclbonr.OvOV r.cch-claim "2, characterized in that the wall el -:;.; Brain (16) in the area of its sand (19) E ^Ci ~ :: oigr i3ö un a conical pool (22). Outside the ring: the tip lying on the valve rod (18) to be formed, while the valve disk (15) has an annular seal (23) in its inside area, which extends to the wall so as to allow passage of Oh! medium between the valve plate and the channel (17) with hot medium to keep the valve closed to a minimum, v / whether the valve is constructed in such a way that the ring seal moves away from the conical surface in such a way as: 1 il -.- r passage between them quickly grows and the Gpiii '': n doz Vvatiltellers with fCühlmediuE then allowed if. a3 Mr-diu ::.; _it high temperatu "^ your working cylinder (3) too . ;;. ':: - :; r.rjoöor- according to Ariuprucn 2, characterized in that ■ -. "-''.": ·: ■ Instruction (2-r) in the: "ju stir line; ( IA-) des Kühlae - .., - .. ο before; .Lf: n Iiine (16) is provided, which in a "ucilau r., \ - i Au;.; ~ ϊ.-Λcü - \ n $ ·, (25) z-.ÜLäot. which is attached to the valve seat (5) ".r \ i. \ ... rc ^ rhulb des livngoQ (16) and which in ·.: - <". r- "öe: v JaTa ^; nit- cieir. Ilaaal (I?) des Kediuxas- with ho BATH her Toni: sra door in the area of the valve plate ^ (15) i ^ · Connected; which is not surrounded by the hung, dadas Cooling medium, cools this area. ■ 3. Piston engine after. Claim 1, characterized gekonr.ze reward · ;;, the driving (6) of the DALI Sinla2ventil3 (1) from eii.es Sys-eir. of rotating squats (7, 3) and einar. Au ^ gIelchshebel _x 'v) is formed, which is known under the liamen Sy3teii Caprotii. BATH